Dr. Andrea Toulouse Profile

Dr. Andrea Toulouse

at Institut für Technische Optik

SPIE Involvement:

Conference Program Committee | Author

Websites:

Company Website

SPIE Journal Paper | 1 April 2024 Open Access

Fast vector wave optical simulation methods for application on 3D-printed microoptics

Marco Wende, Johannes Drozella, Andrea Toulouse, Alois Herkommer

JOM, Vol. 4, Issue 02, 024501, (April 2024) https://doi.org/10.1117/12.10.1117/1.JOM.4.2.024501

KEYWORDS: Electric fields, Reflection, Light sources and illumination, Optical simulations, Micro optics, Refractive index, Manufacturing, Interfaces, Computer simulations, Single mode fibers

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Proceedings Article | 19 March 2024 Presentation

Miniaturised 3D printed fibre-optic probe for autofluorescence detection of human plaques

Rouyan Chen, Florian Rothermel, Andrea Toulouse, Philipp Flad, Robert Fitridge, Robert McLaughlin, Harald Giessen, Alois Herkommer, Jiawen Li

Proceedings Volume PC12820, PC128200A (2024) https://doi.org/10.1117/12.3002467

KEYWORDS: 3D printing, Autofluorescence, Atherosclerosis, Optical coherence tomography, Miniaturization, Fluorescence, Visualization, Stray light, Reflection, Photoresist materials

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Proceedings Article | 12 March 2024 Presentation + Paper

Fast vector wave optical simulation methods for application on 3D-printed micro optics

Marco Wende, Johannes Drozella, Andrea Toulouse, Alois Herkommer

Proceedings Volume 12876, 128760I (2024) https://doi.org/10.1117/12.3001164

KEYWORDS: Reflection, Electric fields, Light sources and illumination, Micro optics, Manufacturing, Single mode fibers, Optics manufacturing, Interfaces, Optical simulations, Polarization, 3D printing, Two photon polymerization, Computational electromagnetics, Optical design, Additive manufacturing

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Proceedings Article | 17 March 2023 Presentation

Towards additive manufacturing of multiplexed volume scattering devices using two-photon polymerization

Johannes Drozella, Andrea Toulouse, Alois Herkommer

Proceedings Volume PC12412, PC124120K (2023) https://doi.org/10.1117/12.2654541

KEYWORDS: Multiplexing, Scattering, Additive manufacturing, Multiple scattering, Two photon polymerization, Polymers, Optics manufacturing, Sensors, Optical fibers, Optical design

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Proceedings Article | 17 March 2023 Presentation

Ultrathin 3D-printed intravascular imaging catheters

Jiawen Li, Simon Thiele, Pavel Puchka, Andrea Toulouse, Rodney Kirk, Bryden Quirk, Ayla Hoogendoorn, Yung Chin Chen, Karlheinz Peter, Emma Akers, Stephen Nicholls, Johan Verjans, Peter Psaltis, Christina Bursill, Alois Herkommer, Harald Giessen, Robert McLaughlin

Proceedings Volume PC12355, PC1235503 (2023) https://doi.org/10.1117/12.2660627

KEYWORDS: Optical coherence tomography, Multimodal imaging, In vivo imaging, Visualization, Optical fibers, Optical design, Luminescence, Image resolution, Freeform optics, Endoscopes

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Proceedings Article | 9 March 2023 Presentation

3D micro-printing of miniaturized fiber-optic probes capable of multi-modal imaging and beam tailoring

Jiawen Li, Simon Thiele, Paul Ruchka, Andrea Toulouse, Rodney Kirk, Bryden Quirk, Ayla Hoogendoorn, Yungchin Chen, Karlheinz Peter, Stephen Nicholls, Johan Verjans, Peter Psaltis, Christina Bursill, Alois Herkommer, Harald Giessen, Robert McLaughlin

Proceedings Volume PC12367, PC1236703 (2023) https://doi.org/10.1117/12.2652181

KEYWORDS: Multimodal imaging, Fiber optics, 3D image processing, Endoscopy, Optical coherence tomography, Freeform optics, Time metrology, Prototyping, Monochromatic aberrations, Micro optics

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Proceedings Article | 20 May 2022 Presentation

Complex 3D printed microoptical systems: from a pinhole camera to a spectrometer

Andrea Toulouse, Johannes Drozella, Simon Thiele, Harald Giessen, Alois Herkommer

Proceedings Volume PC12135, PC1213504 (2022) https://doi.org/10.1117/12.2624165

KEYWORDS: Spectroscopy, Complex systems, Imaging systems, Coded apertures, Microfluidics, Cameras, Stray light control, Stereoscopic cameras, Micro optics, Zoom lenses

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Femtosecond direct laser writing is a key enabling technology for complex microoptics. Imaging and illumination applications have impressively been demonstrated in the past. Here, we take 3D-printed microoptics one step further and assess the feasibility of complex microoptical systems: From a pinhole camera to a spectrometer. The first step in successful realization of complex microoptical systems are specialized measurement techniques that match both fabrication and simulation methods. Different setups are presented to reach stray light control, isolate topographic effects, and measure the efficiency of diffractive structures with small lateral extensions. All methods are easy to implement and can be key to targeted optimization of complex systems. In a second step, the spectrum of corresponding fabrication methods to fsDLW is extended by the microfluidic addition of a functional substance. We show that the incorporation of microfluidic channels into the 3D-printed mounting structures can be used to absorb a non-transparent fluid to create aperutres. Thus, a 3D-printed micro-pinhole camera can be demonstrated. Finally, all learnings and methods from these studies are combined to create complex microoptical systems. Multiple concepts of ultra-compact 3D-printed wide-angle cameras are examined. A special focus is laid on optical and mechanical design, measurement and optimization of highly tilted refractive and catadioptric freeform surfaces. An iterative correction mechanism is developed to improve shape fidelity to realize first implementations of 180°×360° field of view multi-aperture imaging. The highest complexity of a 3D-printed microoptical system is finally reached by the realization of an entire measurement system. The feasibility of a monolithic spectrometer in a volume of only 100 × 100 × 300 μm³ is theoretically and experimentally demonstrated. The results represent the first direct spectrometer in this miniature size range and unclose a new era of complex 3D-printed microoptical (measurement) systems, enabled by novel methods for charactarization, optimization and aperture fabrication.

Proceedings Article | 4 March 2022 Presentation + Paper

Micro-3D-printed multi-aperture freeform ultra-wide-angle systems: production, characterization, and correction

Johannes Drozella, Andrea Toulouse, Pascal Motzfeld, Nils Fahrbach, Valese Aslani, Simon Thiele, Alois Herkommer, Harald Giessen

Proceedings Volume 11989, 119890V (2022) https://doi.org/10.1117/12.2609844

KEYWORDS: Optics manufacturing, Objectives, Imaging systems, Freeform optics, Microscopes, Combined lens-mirror systems, 3D printing, Static characterization, Two photon polymerization, Micro optics

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Proceedings Article | 5 March 2021 Presentation

Stitching-free 3D printing of millimeter-sized highly transparent spherical and aspherical optical components

Simon Ristok, Simon Thiele, Andrea Toulouse, Alois Herkommer, Harald Giessen

Proceedings Volume 11677, 1167710 (2021) https://doi.org/10.1117/12.2577596

KEYWORDS: Lenses, 3D printing, Spherical lenses, Optical components, Objectives, Glasses, Two photon polymerization, Stereoscopy, Polymers, Polymerization

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Proceedings Article | 30 March 2020 Presentation

Translating optical design freedom into 3D printed complex micro-optics (Conference Presentation)

Simon Thiele, Andrea Toulouse, Simon Ristok, Harald Giessen, Alois Herkommer

Proceedings Volume 11349, 1134904 (2020) https://doi.org/10.1117/12.2559198

KEYWORDS: Optical design, Micro optics, Optics manufacturing, Imaging systems, Reflectivity, 3D printing, Stereolithography, Multiphoton lithography, Photonic crystals, Beam shaping

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Proceedings Article | 9 September 2019 Paper

Fast and comfortable GPU-accelerated wave-optical simulation for imaging properties and design of highly aspheric 3D-printed freeform microlens systems

Johannes Drozella, Andrea Toulouse, Simon Thiele, Alois Herkommer

Proceedings Volume 11105, 1110506 (2019) https://doi.org/10.1117/12.2528843

KEYWORDS: Wave propagation, Imaging systems, Refractive index, Aspheric lenses, Microlens, Optical simulations, Optical design, Matrices, 3D printing, Zemax

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Proceedings Article | 4 March 2019 Paper

Super-fine inkjet process for alignment-free integration of non-transparent structures into 3D-printed micro-optics

Andrea Toulouse, Simon Thiele, Harald Giessen, Alois Herkommer

Proceedings Volume 10930, 109300W (2019) https://doi.org/10.1117/12.2513520

KEYWORDS: Microlens, Stray light, Micro optics, Optical design, Objectives, Imaging systems, Apertures, Image contrast enhancement, Two photon polymerization, 3D printing, Inkjet technology

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Proceedings Article | 27 February 2019 Paper

Virtual reality headset using a gaze-synchronized display system

Andrea Toulouse, Simon Thiele, Alois Herkommer

Proceedings Volume 11040, 1104009 (2019) https://doi.org/10.1117/12.2523920

KEYWORDS: Eye, Spatial resolution, Displays, Optical design, Virtual reality, Distortion, Retina, Image resolution, Optical resolution, Imaging systems

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Showing 5 of 13 publications

Conference Committee Involvement (7)

Laser 3D Manufacturing XII

25 January 2025 | San Francisco, California, United States

Optical Instrument Science, Technology, and Applications III

10 April 2024 | Strasbourg, France

Laser 3D Manufacturing XI

30 January 2024 | San Francisco, California, United States

Laser 3D Manufacturing X

31 January 2023 | San Francisco, California, United States

Laser 3D Manufacturing IX

25 January 2022 | San Francisco, California, United States

Showing 5 of 7 Conference Committees

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